MacBook Pro 13 - iStat claims 0 temperature for Heatsink A

Ever since buying my MacBook Pro 13, 2.26GHz, Heatsink A has been reading a constant 0˚C in iStat menus. Is this universal, or will I need a replacement? I have only modified the amount of RAM so far, I bought 4GB of RAM from Crucial on Newegg, and I have been using Macs for close to 5 years now. Thanks!

EDIT: I just installed the iStat Pro widget, and it doesn't even list Heatsink A as a temperature sensor. I'm going to assume that iStat menus is incorrect in listing it as an option, and that it doesn't exist on any MBP 13.

Ever since buying my MacBook Pro 13, 2.26GHz, Heatsink A has been reading a constant 0˚C in iStat menus. Is this universal, or will I need a replacement? I have only modified the amount of RAM so far, I bought 4GB of RAM from Crucial on Newegg, and I have been using Macs for close to 5 years now. Thanks!

EDIT: I just installed the iStat Pro widget, and it doesn't even list Heatsink A as a temperature sensor. I'm going to assume that iStat menus is incorrect in listing it as an option, and that it doesn't exist on any MBP 13.

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